MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4ec5a5df2d564dd592f7d5f94de5c752b0bed56cdffed8af2719ff63c7db332. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



AgentTesla


Vendor detections: 18


Intelligence 18 IOCs YARA 21 File information Comments 1

SHA256 hash: a4ec5a5df2d564dd592f7d5f94de5c752b0bed56cdffed8af2719ff63c7db332
SHA3-384 hash: 06983fab7c7a179b65043f95caf571a9961c8b69d270ed6f4b8bc0d26908ad5bb77a78f5e2c028fc5dfb7dfaab839de3
SHA1 hash: 5b01b97f4f87e9e6556e6cd3960671dfa3cf4509
MD5 hash: 5072b45f4e46fd71a4ee787194b996cb
humanhash: speaker-earth-solar-colorado
File name:5072b45f4e46fd71a4ee787194b996cb
Download: download sample
Signature AgentTesla
File size:796'168 bytes
First seen:2024-03-09 09:14:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:8NVP2iNAOl4+LOcMOgb3ZJb9lAtOgGvo5qVb4gvY42O6v27cCaW/PbkR:8NR13ecMfXx4ee/UYril/P+
Threatray 382 similar samples on MalwareBazaar
TLSH T17D0502C033AC1B46D6BD83F21672888077B6B9272465D70DACD561CE0E71FD0A62BB97
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter zbetcheckin
Tags:32 AgentTesla exe

Intelligence


File Origin
# of uploads :
1
# of downloads :
352
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
a4ec5a5df2d564dd592f7d5f94de5c752b0bed56cdffed8af2719ff63c7db332.exe
Verdict:
Malicious activity
Analysis date:
2024-03-09 09:15:49 UTC
Tags:
agenttesla stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1405803 Sample: WHW6mWPjVa.exe Startdate: 09/03/2024 Architecture: WINDOWS Score: 100 61 us2.smtp.mailhostbox.com 2->61 63 api.ipify.org 2->63 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 Sigma detected: Scheduled temp file as task from temp location 2->73 75 9 other signatures 2->75 8 WHW6mWPjVa.exe 7 2->8         started        12 iGYvtOrpGViX.exe 5 2->12         started        14 mpTrle.exe 2->14         started        16 mpTrle.exe 2->16         started        signatures3 process4 file5 57 C:\Users\user\AppData\...\iGYvtOrpGViX.exe, PE32 8->57 dropped 59 C:\Users\user\AppData\Local\...\tmpA15C.tmp, XML 8->59 dropped 85 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->85 87 Uses schtasks.exe or at.exe to add and modify task schedules 8->87 89 Adds a directory exclusion to Windows Defender 8->89 18 WHW6mWPjVa.exe 16 5 8->18         started        23 powershell.exe 23 8->23         started        33 3 other processes 8->33 91 Multi AV Scanner detection for dropped file 12->91 93 Machine Learning detection for dropped file 12->93 95 Injects a PE file into a foreign processes 12->95 25 iGYvtOrpGViX.exe 12->25         started        35 2 other processes 12->35 27 mpTrle.exe 14->27         started        37 2 other processes 14->37 29 mpTrle.exe 16->29         started        31 schtasks.exe 16->31         started        signatures6 process7 dnsIp8 65 us2.smtp.mailhostbox.com 208.91.199.223, 49710, 49714, 49723 PUBLIC-DOMAIN-REGISTRYUS United States 18->65 67 api.ipify.org 172.67.74.152, 443, 49709, 49713 CLOUDFLARENETUS United States 18->67 53 C:\Users\user\AppData\Roaming\...\mpTrle.exe, PE32 18->53 dropped 55 C:\Users\user\...\mpTrle.exe:Zone.Identifier, ASCII 18->55 dropped 77 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->77 79 Tries to steal Mail credentials (via file / registry access) 18->79 81 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->81 39 WmiPrvSE.exe 23->39         started        41 conhost.exe 23->41         started        83 Tries to harvest and steal browser information (history, passwords, etc) 29->83 43 conhost.exe 31->43         started        45 conhost.exe 33->45         started        47 conhost.exe 33->47         started        49 conhost.exe 35->49         started        51 conhost.exe 37->51         started        file9 signatures10 process11
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2024-03-07 15:57:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
60
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b
MD5 hash:
7c7fb6daa78beb69128991ff893143ed
SHA1 hash:
c01bb99984b12b84129db80eae1d5d8341a358e2
SH256 hash:
9d47fa51e2ce58e39d7fdbe8fc0fb3f1072a499cb9ffa2432c19e7cf394b20da
MD5 hash:
10a057d3b2ea284c6a0f8893db6303b3
SHA1 hash:
6564dc1dae22d7c3436d4a70444d8895b42e6873
Detections:
AgentTesla win_agent_tesla_g2 INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients Agenttesla_type2 INDICATOR_SUSPICIOUS_Binary_References_Browsers INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients INDICATOR_EXE_Packed_GEN01 INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
SH256 hash:
bdbfc3de9086078a970bbf6e0451d34e1d1624d22342c94333e52cc25960e5cc
MD5 hash:
ec374b0b6854436913a53e9fef1e808f
SHA1 hash:
4c073cd6a84ae2a224403d23940c81be70d623c0
SH256 hash:
996efd1a33d04923f83df8ffc31191b10b6a15ef56d8961351673c74416f7506
MD5 hash:
95046bfbc193c1faa89d6a32c870082c
SHA1 hash:
0c707a044df00706628eff48e982d29006c59aeb
SH256 hash:
a4ec5a5df2d564dd592f7d5f94de5c752b0bed56cdffed8af2719ff63c7db332
MD5 hash:
5072b45f4e46fd71a4ee787194b996cb
SHA1 hash:
5b01b97f4f87e9e6556e6cd3960671dfa3cf4509
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Malware family:
AgentTesla
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:AgentTeslaV3
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_EXE_Packed_GEN01
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:pe_imphash
Rule name:PE_Potentially_Signed_Digital_Certificate
Author:albertzsigovits
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_9f4a80b2
Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Web download

AgentTesla

Executable exe a4ec5a5df2d564dd592f7d5f94de5c752b0bed56cdffed8af2719ff63c7db332

(this sample)

  
Delivery method
Distributed via web download

BLint


The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments



Avatar
zbet commented on 2024-03-09 09:14:47 UTC

url : hxxp://107.174.138.160/18060/CNN.exe